Siblings' late father discovered vast iron ore deposits in Western Australia.

Siblings' late father discovered vast iron ore deposits in Western Australia. With Gina Rinehart (No. 7), earn annual royalties from Rio Tinto's Hamersley mine. Last April settled lawsuit with niece and nephew over rights to royalty; terms of settlement not disclosed. Bennett trying to sell Perth mansion for $48 million. Wright's main interest is his Voyager Estate Winery.